Non capture positions

Win: 29.148.467 (100.0%)
Draw: 693 (0.0%)
Lose: 2 (0.0%)

All positions

Win: 46.255.295 (100.0%)
Draw: 693 (0.0%)
Lose: 2 (0.0%)

Native examples were selected after counting from 10731 sampled White-quiet boards, including targeted starting-rank and losing candidates. Statistics still cover every enumerated position. An absent example does not prove the category is absent.


Special WDL positions

One example per category. Every starting position is double quiet: neither side has a capture. Results and move outcomes are relative to the player to move in the diagram. Kings have a double ring.

White-to-move examples are preferred; Black-to-move examples are retained when no qualifying White-to-move example was found.

Pip count means remaining rank distance to promotion (kings: zero). Highest pip count puts men nearest their starting ranks; both sides must simultaneously attain their material's maximum. Material disadvantage means fewer pieces.

Only move to win

At least three legal moves; exactly one wins and every alternative draws or loses.

No qualifying example proved from the available WDL data.

Only move to draw

At least two legal moves; exactly one draws and every alternative loses.

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Black to move: Draw. Pip count: White 8, Black 1.

B:W10,K26,K29,38:B44

MoveResult
44-50Loss
44-49Draw

Mutual zugzwang

On this same board, White to move loses and Black to move loses.

No qualifying example proved from the available WDL data.

Whoever moves wins

On this same board, White to move wins and Black to move wins.

No qualifying example proved from the available WDL data.

Win with fewer pieces

The player to move has fewer pieces and a proven win.

No qualifying example proved from the available WDL data.

Draw with fewer pieces

The player to move has fewer pieces and a proven draw.

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Black to move: Draw. Pip count: White 12, Black 1.

B:WK26,27,K30,39:B45

MoveResult
45-50Draw

Unique winning sacrifice

Exactly one of at least two moves wins; every compulsory reply captures the piece offered by that move.

No qualifying example proved from the available WDL data.

Promotion trap

A promotion draws or loses, while a non-promoting move wins.

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White to move: Win. Pip count: White 7, Black 1.

W:WK7,9,K29,34:B43

MoveResult
7-1Draw
7-2Win
7-11Win
7-16Win
7-12Win
7-18Draw
7-23Draw
29-23Win
29-18Draw
29-12Win
29-24Win
29-20Win
29-15Win
29-33Win
29-38Win
29-42Win
29-47Win
9-3Win
9-4Draw
34-30Win

Both sides at highest pip count: win

Both sides attain their maximum pip count; the player to move wins.

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White to move: Win. Pip count: White 18, Black 9.

W:WK42,K43,46,47:B5

MoveResult
42-37Win
42-31Win
42-26Win
42-38Win
42-33Win
42-29Win
42-24Win
42-20Win
42-15Win
42-48Win
43-38Win
43-32Win
43-27Win
43-21Win
43-16Win
43-39Win
43-34Win
43-30Win
43-25Win
43-48Win
43-49Win
47-41Win
46-41Win

Both sides at highest pip count: loss

Both sides attain their maximum pip count; the player to move loses.

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Black to move: Loss. Pip count: White 18, Black 9.

B:WK42,K43,46,47:B5

MoveResult
5-10Loss